Dark swarm

Dark swarm is a collection of small zerg organisms that live within defilers. Defilers can spontaneously launch a number of these creatures into the fray, creating a defensive smokescreen that reduces the accuracy of ranged attacks.[1]

Contents

Shields units in a 6x6 area from ranged attacks. Ranged attacks with splash damage only deal minimal splash damage. Firebat and lurker attacks, and damage from cast abilities, are totally unaffected. The casting player's buildings are shielded; enemy and allied buildings are not.